509375567 has 2 divisors, whose sum is σ = 509375568. Its totient is φ = 509375566.

The previous prime is 509375563. The next prime is 509375593. The reversal of 509375567 is 765573905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 509375567 - 2² = 509375563 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509375561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254687783 + 254687784.

It is an arithmetic number, because the mean of its divisors is an integer number (254687784).

Almost surely, 2^509375567 is an apocalyptic number.

509375567 is a deficient number, since it is larger than the sum of its proper divisors (1).

509375567 is an equidigital number, since it uses as much as digits as its factorization.

509375567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 992250, while the sum is 47.

The square root of 509375567 is about 22569.3501678715. The cubic root of 509375567 is about 798.6307656461.

The spelling of 509375567 in words is "five hundred nine million, three hundred seventy-five thousand, five hundred sixty-seven".